❌ FAIL: Test report for kernel 5.13.0-rc4 (arm-next, 8124c8a6)

[Will Deacon]

On Wed, Jun 02, 2021 at 01:00:47PM +0200, Veronika Kabatova wrote:
> On Wed, Jun 2, 2021 at 12:51 PM Will Deacon <will at kernel.org> wrote:
> > On Wed, Jun 02, 2021 at 12:40:07PM +0200, Ard Biesheuvel wrote:
> > > On Wed, 2 Jun 2021 at 12:12, Will Deacon <will at kernel.org> wrote:
> > > > On Wed, Jun 02, 2021 at 01:35:01AM -0000, CKI Project wrote:
> > > > >      stress: stress-ng
> > > >
> > > > This explodes pretty badly. Some CPUs detect RCU stalls when trying to use
> > > > the EFI "efi_read_time" service, which eventually fails but soon after we
> > > > explode trying to access memory which I think is mapped by
> > > > acpi_os_ioremap(), so it looks like the f/w might be the culprit here. Is
> > > > the "HPE Apollo 70" machine known to have bad EFI firmware?
> > > >
> > > > https://arr-cki-prod-datawarehouse-public.s3.amazonaws.com/datawarehouse-public/2021/06/01/313156257/build_aarch64_redhat%3A1310052388/tests/stress_stress_ng/10079827_aarch64_2_dmesg.log
> > > >
> > > > (scroll to the end for the fireworks)
> > > >
> > >
> > > Wow that looks pretty horrible. I take it this tree has your MAIR changes?
> >
> > Nope, this is just vanilla -rc4! I'm trying to get a "known good" base
> > before I throw all the new things at it :)
> >
> > > Would be useful to have a log with efi=debug, to see what the EFI
> > > memory map looks like.
> >
> > Veronika -- please could you help us with that?
> 
> Sure, I'll get a rerun with that option and report back when I have any
> results. I am also planning just a plain rerun on the machine to see if it
> reproduces somewhat reliably, however the machine is taken up by
> other automation now so it will take a while.

Thanks. In the meantime, I've pushed a bunch of new stuff into for-kernelci,
so I can at least see if it regresses when compared to the three failures
we're seeing here.

> My original reply is sitting in moderation queue as I wasn't subscribed
> (hopefully now after subscribing this email will get to the list...) but for
> the new people on the thread, one of the LTP issues is a potential
> testing bug:
> 
> https://gitlab.com/cki-project/kernel-tests/-/issues/577

Aha, good. That at least looks like a generic (non-arm64) thing that we can
ignore for the purposes of the arm64 tree.

Will